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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: Schema.html 842 2015-03-07 18:20:42Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.core;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.util.Collections;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.HashMap;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.util.Map;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.util.SortedMap;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import java.util.TreeMap;<a name="line.14"></a>
<span class="sourceLineNo">015</span><a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.jsimpledb.schema.SchemaModel;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.jsimpledb.schema.SchemaObjectType;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>/**<a name="line.19"></a>
<span class="sourceLineNo">020</span> * Contains information describing one schema version.<a name="line.20"></a>
<span class="sourceLineNo">021</span> */<a name="line.21"></a>
<span class="sourceLineNo">022</span>public class Schema {<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>    final int versionNumber;<a name="line.24"></a>
<span class="sourceLineNo">025</span>    final byte[] encodedXML;<a name="line.25"></a>
<span class="sourceLineNo">026</span>    final SchemaModel schemaModel;<a name="line.26"></a>
<span class="sourceLineNo">027</span>    final TreeMap&lt;Integer, ObjType&gt; objTypeMap = new TreeMap&lt;&gt;();<a name="line.27"></a>
<span class="sourceLineNo">028</span>    final TreeMap&lt;Integer, StorageInfo&gt; storageInfoMap = new TreeMap&lt;&gt;();<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>    /**<a name="line.30"></a>
<span class="sourceLineNo">031</span>     * Constructor.<a name="line.31"></a>
<span class="sourceLineNo">032</span>     *<a name="line.32"></a>
<span class="sourceLineNo">033</span>     * @throws IllegalArgumentException if a storage ID is used twice<a name="line.33"></a>
<span class="sourceLineNo">034</span>     */<a name="line.34"></a>
<span class="sourceLineNo">035</span>    Schema(int versionNumber, byte[] encodedXML, SchemaModel schemaModel, FieldTypeRegistry fieldTypeRegistry) {<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>        // Sanity check<a name="line.37"></a>
<span class="sourceLineNo">038</span>        if (versionNumber &lt;= 0)<a name="line.38"></a>
<span class="sourceLineNo">039</span>            throw new IllegalArgumentException("versionNumber &lt;= 0");<a name="line.39"></a>
<span class="sourceLineNo">040</span>        if (schemaModel == null)<a name="line.40"></a>
<span class="sourceLineNo">041</span>            throw new IllegalArgumentException("null schemaModel");<a name="line.41"></a>
<span class="sourceLineNo">042</span>        this.versionNumber = versionNumber;<a name="line.42"></a>
<span class="sourceLineNo">043</span>        this.encodedXML = encodedXML;<a name="line.43"></a>
<span class="sourceLineNo">044</span>        this.schemaModel = schemaModel.clone();<a name="line.44"></a>
<span class="sourceLineNo">045</span><a name="line.45"></a>
<span class="sourceLineNo">046</span>        // Build object types<a name="line.46"></a>
<span class="sourceLineNo">047</span>        for (SchemaObjectType schemaObjectType : this.schemaModel.getSchemaObjectTypes().values()) {<a name="line.47"></a>
<span class="sourceLineNo">048</span>            final ObjType objType = new ObjType(schemaObjectType, this, fieldTypeRegistry);<a name="line.48"></a>
<span class="sourceLineNo">049</span>            final int storageId = objType.getStorageId();<a name="line.49"></a>
<span class="sourceLineNo">050</span>            final ObjType otherObjType = this.objTypeMap.put(storageId, objType);<a name="line.50"></a>
<span class="sourceLineNo">051</span>            if (otherObjType != null) {<a name="line.51"></a>
<span class="sourceLineNo">052</span>                throw new IllegalArgumentException("incompatible use of storage ID " + storageId<a name="line.52"></a>
<span class="sourceLineNo">053</span>                  + " by both " + otherObjType + " and " + objType + " in " + this);<a name="line.53"></a>
<span class="sourceLineNo">054</span>            }<a name="line.54"></a>
<span class="sourceLineNo">055</span>        }<a name="line.55"></a>
<span class="sourceLineNo">056</span><a name="line.56"></a>
<span class="sourceLineNo">057</span>        // Create StorageInfo objects and check for conflicts<a name="line.57"></a>
<span class="sourceLineNo">058</span>        final HashMap&lt;Integer, String&gt; descriptionMap = new HashMap&lt;&gt;();<a name="line.58"></a>
<span class="sourceLineNo">059</span>        for (ObjType objType : this.objTypeMap.values()) {<a name="line.59"></a>
<span class="sourceLineNo">060</span>            this.addStorageInfo(objType, descriptionMap);<a name="line.60"></a>
<span class="sourceLineNo">061</span>            for (Field&lt;?&gt; field : objType.fields.values()) {<a name="line.61"></a>
<span class="sourceLineNo">062</span>                this.addStorageInfo(field, descriptionMap);<a name="line.62"></a>
<span class="sourceLineNo">063</span>                if (field instanceof ComplexField) {<a name="line.63"></a>
<span class="sourceLineNo">064</span>                    final ComplexField&lt;?&gt; complexField = (ComplexField&lt;?&gt;)field;<a name="line.64"></a>
<span class="sourceLineNo">065</span>                    for (SimpleField&lt;?&gt; subField : complexField.getSubFields())<a name="line.65"></a>
<span class="sourceLineNo">066</span>                        this.addStorageInfo(subField, descriptionMap);<a name="line.66"></a>
<span class="sourceLineNo">067</span>                }<a name="line.67"></a>
<span class="sourceLineNo">068</span>            }<a name="line.68"></a>
<span class="sourceLineNo">069</span>            for (CompositeIndex index : objType.compositeIndexes.values())<a name="line.69"></a>
<span class="sourceLineNo">070</span>                this.addStorageInfo(index, descriptionMap);<a name="line.70"></a>
<span class="sourceLineNo">071</span>        }<a name="line.71"></a>
<span class="sourceLineNo">072</span>    }<a name="line.72"></a>
<span class="sourceLineNo">073</span><a name="line.73"></a>
<span class="sourceLineNo">074</span>    /**<a name="line.74"></a>
<span class="sourceLineNo">075</span>     * Get the version number associated with this instance.<a name="line.75"></a>
<span class="sourceLineNo">076</span>     *<a name="line.76"></a>
<span class="sourceLineNo">077</span>     * @return version number, always greater than zero<a name="line.77"></a>
<span class="sourceLineNo">078</span>     */<a name="line.78"></a>
<span class="sourceLineNo">079</span>    public int getVersionNumber() {<a name="line.79"></a>
<span class="sourceLineNo">080</span>        return this.versionNumber;<a name="line.80"></a>
<span class="sourceLineNo">081</span>    }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span>    /**<a name="line.83"></a>
<span class="sourceLineNo">084</span>     * Get the {@link SchemaModel} on which this schema version is based.<a name="line.84"></a>
<span class="sourceLineNo">085</span>     *<a name="line.85"></a>
<span class="sourceLineNo">086</span>     * @return schema model<a name="line.86"></a>
<span class="sourceLineNo">087</span>     */<a name="line.87"></a>
<span class="sourceLineNo">088</span>    public SchemaModel getSchemaModel() {<a name="line.88"></a>
<span class="sourceLineNo">089</span>        return this.schemaModel;<a name="line.89"></a>
<span class="sourceLineNo">090</span>    }<a name="line.90"></a>
<span class="sourceLineNo">091</span><a name="line.91"></a>
<span class="sourceLineNo">092</span>    /**<a name="line.92"></a>
<span class="sourceLineNo">093</span>     * Get all of the {@link ObjType}s that constitute this schema version, indexed by storage ID.<a name="line.93"></a>
<span class="sourceLineNo">094</span>     *<a name="line.94"></a>
<span class="sourceLineNo">095</span>     * @return unmodifiable mapping from {@linkplain ObjType#getStorageId storage ID} to {@link ObjType}<a name="line.95"></a>
<span class="sourceLineNo">096</span>     */<a name="line.96"></a>
<span class="sourceLineNo">097</span>    public SortedMap&lt;Integer, ObjType&gt; getObjTypes() {<a name="line.97"></a>
<span class="sourceLineNo">098</span>        return Collections.unmodifiableSortedMap(this.objTypeMap);<a name="line.98"></a>
<span class="sourceLineNo">099</span>    }<a name="line.99"></a>
<span class="sourceLineNo">100</span><a name="line.100"></a>
<span class="sourceLineNo">101</span>    /**<a name="line.101"></a>
<span class="sourceLineNo">102</span>     * Get the {@link ObjType} in this schema with the given storage ID.<a name="line.102"></a>
<span class="sourceLineNo">103</span>     *<a name="line.103"></a>
<span class="sourceLineNo">104</span>     * @param storageId storage ID<a name="line.104"></a>
<span class="sourceLineNo">105</span>     * @return the {@link ObjType} with storage ID {@code storageID}<a name="line.105"></a>
<span class="sourceLineNo">106</span>     * @throws UnknownTypeException if no {@link ObjType} with storage ID {@code storageId} exists<a name="line.106"></a>
<span class="sourceLineNo">107</span>     */<a name="line.107"></a>
<span class="sourceLineNo">108</span>    public ObjType getObjType(int storageId) {<a name="line.108"></a>
<span class="sourceLineNo">109</span>        final ObjType objType = this.objTypeMap.get(storageId);<a name="line.109"></a>
<span class="sourceLineNo">110</span>        if (objType == null)<a name="line.110"></a>
<span class="sourceLineNo">111</span>            throw new UnknownTypeException(storageId, this.versionNumber);<a name="line.111"></a>
<span class="sourceLineNo">112</span>        return objType;<a name="line.112"></a>
<span class="sourceLineNo">113</span>    }<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span>    @Override<a name="line.115"></a>
<span class="sourceLineNo">116</span>    public String toString() {<a name="line.116"></a>
<span class="sourceLineNo">117</span>        return "schema version " + this.versionNumber;<a name="line.117"></a>
<span class="sourceLineNo">118</span>    }<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span>    // Add new StorageInfo, checking for conflicts<a name="line.120"></a>
<span class="sourceLineNo">121</span>    private void addStorageInfo(SchemaItem schemaItem, Map&lt;Integer, String&gt; descriptionMap) {<a name="line.121"></a>
<span class="sourceLineNo">122</span>        final StorageInfo storageInfo = schemaItem.toStorageInfo();<a name="line.122"></a>
<span class="sourceLineNo">123</span>        final StorageInfo previous = this.storageInfoMap.put(storageInfo.storageId, storageInfo);<a name="line.123"></a>
<span class="sourceLineNo">124</span>        if (previous != null &amp;&amp; !previous.equals(storageInfo)) {<a name="line.124"></a>
<span class="sourceLineNo">125</span>            throw new IllegalArgumentException("invalid duplicate use of storage ID " + storageInfo.storageId<a name="line.125"></a>
<span class="sourceLineNo">126</span>              + " for both " + descriptionMap.get(storageInfo.storageId) + " and " + schemaItem);<a name="line.126"></a>
<span class="sourceLineNo">127</span>        }<a name="line.127"></a>
<span class="sourceLineNo">128</span>        descriptionMap.put(storageInfo.storageId, "" + schemaItem);<a name="line.128"></a>
<span class="sourceLineNo">129</span>    }<a name="line.129"></a>
<span class="sourceLineNo">130</span>}<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>




























































</pre>
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